handling prestressed concrete strand pci

Handling Prestressed Concrete Strand - PCI

Handling Prestressed Concrete Strand H. Kent Preston, P.E. Affiliated Consultant Wiss, Janney, Elstner Associates, Inc. Princeton Junction, New Jersey Consultant Florida Wire and Cable Company Jacksonville, Florida Long-time PCI member H. Kent Preston has been involved in the prestressed concrete industry from its beginnings.

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Handling Prestressed Concrete Strand - PCI

The wires used to make strand for prestressed concrete are much more complex than reinforcing steel bars and, in certain respects, must be treated with greater care. This article discusses the various material properties of strand that affect its performance and describes the procedures used in handling, placing and tensioning strand, and the ...

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Recommended Practice for Precast Prestressed Concrete ...

PCI Bridge Producers Committee by Ross Bryan Associates, Inc. Nashville, Tennessee Based on the latest research and field experience, this PCI Committee report presents recommendations for the design, production, handling, shipping and erection of precast prestressed concrete composite bridge deck panels. The report also covers product ...

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Evaluation of Degree of Rusting on Prestressed Concrete Strand

PCI Committee on Prestressing Steel The material standard specification for seven-wire pre­ stressed concrete strand, ASTM A 416, states in Section 8.4 that "Slight rusting, provided it is not sufficient to cause pits visible to the unaided eye, shall not be cause for rejection."2 The Manual for Quality Control for Plants and Production

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Recommended Practice for Design, Manufacture, and ... - PCI

Precast, Prestressed Concrete Bridge Products PCI PD-01, Calculation of Interaction Diagrams for Precast, Prestressed Piles PCI STD-112, Standard Prestressed Concrete Piles PCI STD-113, Prestressed Concrete Sheetpiles 1.2.4 American Welding Society (AWS) standards AWS D1.1, Structural Welding Code – Steel

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User’s Guide for Handling, Storage, and Erection ... - PCI

Prestressed concrete poles are gaining widespread usages as structural supports for transmission and distribution electric power lines, area lighting applications, street lighting, telecommunications structures, and several other applications. Handling, storage, and erection considerations are important for the overall success of the project.

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Precast Prestressed Concrete I Bridge Deck Panels - PCI

P recast prestressed concrete deck panels are widely used in the con-struction of bridges in the United States. A 1982 survey of the State Highway De-partments by the PCI Bridge Committee showed that 21 states use the panels regularly and another seven states were trying the method through bidding op-tions or were developing details prior to

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Acceptance Criteria for Bond Quality of Strand for ... - PCI

researching strand slip, bond and development length. 52 In this test program, six samples of 0.5 in. (13 mm) diameter strand were obtained from precast prestressed concrete producers from widely separated regions of North America to evaluate strand bond performance. A total of 2 7 6 tests were carried out on the specimens,

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CONCRETE BRIDGE TECHNOLOGY PCI Recommended

and concrete combination, while strand draw-in measurements provide direct measurements on a fabricated component without additional specimens. Additional guidance and commentary to further clarify the intent of the recommended practice is currently being developed. References 1. Precast/Prestressed Concrete Institute (PCI) Strand Bond Task

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Handling and Shipping of Prestressed Concrete Girders

during handling of prestressed concrete girders for suggestions on improving stability. The rotational stiffness and center-to-center wheel spacing used in design shall be taken from Table 5.6.3-1.

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SECTION 03 41 33, PRECAST STRUCTURAL PRETENSIONED

Transportation, site handling, and erection shall be performed with acceptable equipment and methods, and by qualified personnel. ... Seven-Wire Steel Strand for Prestressed Concrete. ... Prestressed Concrete Institute (PCI): MNL-116-99Manual for Quality Control for Plants and Production of Precast Concrete Products Fourth Edition. MNL-127 ...

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SECTION 31 62 13.20 PRECAST/PRESTRESSED CONCRETE

PCI STD-112 (1984) Standard Prestressed Concrete Piles Square, Octagonal and Cylinder 1.2 Acceptance Criteria Piles shall be driven to a minimum depth of thirty eight (38) feet below MLLW elevation. Pile shall be octagonal, 16 inches in diameter and 50 feet in length. 1.3 PILE REQUIREMENTS Provide precast prestressed concrete pile, PCI JR-382.

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GUIDE TO RECOMMENDED PRACTICE FOR THE REPAIR OF

Guide - 5 1 INTRODUCTION Throughout this Guide, commentary and reference to the supporting NCHRP 20-07 Task 307 Final Report (referred to as the Report) are made by section number in square brackets. This Guide serves to update the 1985 NCHRP Report 280: Guidelines for Evaluation and Repair of Prestressed Concrete Bridge Members.This report remains a primary reference for this topic.

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708 - Prestressed Concrete - MediaWiki

Concrete Spun Poles. Prestressed concrete spun poles are used to mount cameras and other Intelligent Transportation System (ITS) equipment at high elevations in order to provide the proper vantage point. Similar to beams, strands are pre-tensioned and then the forms are rotated at a high speed to create a pole that is hollow in the middle.

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Implementation of 0.7 in. Diameter Strands in Prestressed ...

Twenty-six strand samples were tested to evaluate the breaking strength, yield strength, and modulus of elasticity of 0.7 in. diameter strands. Test results indicated that the tested strands meet the requirements of the ASTM A416-07. Also, transfer length measurements were taken at three different locations on two prestressed concrete

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prestressed concrete – Concrete Products

Mar 20, 2020  Sources: ASTM International, West Conshocken, Pa.; CP staff. ASTM Committee A01 on Steel, Stainless Steel and Related Alloys has approved the inclusion of grades 310, 325, 340 product in A416/A416M, Specification for Low-Relaxation, Seven-Wire Steel Strand for Prestressed Concrete, representing a 15- to 25-percent increase in minimum tensile strength from existing grades.

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Prestressed concrete - Wikipedia

Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" during production, in a manner that strengthens it against tensile forces which will exist when in service.: 3–5 This compression is produced by the tensioning of high-strength "tendons" located within or adjacent to the concrete and is done to improve the performance of the concrete in service.

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PCI E-Learning

The Precast/Prestressed Concrete Institute (PCI) was established to foster greater understanding and use of precast and prestressed concrete products. PCI is headquartered in Chicago, Illinois, maintains a full staff of technical, marketing and education specialists, and has organization and individual members all over the world.

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Article 5.5.4.3 Page 1 of 1 11/2019

Prestressed Concrete Bridge Girders. The girder should be checked when the girder is lifted from the forms assuming a hanging girder, vertical cables, and no wind. This condition is shown in Example calculation 6.1.1 in the PCI Manual. The location of the pick points used in the analysis shall be shown on the plans. Revisions:

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Handling out-of-tolerance strand elongations D

for prestressed concrete, it’s standard practice to measure force in the strand by two inde- ... Handling out-of-tolerance strand elongations During prestressing, force in the strand is measured by pressure gauge. The gauge ... PCI offers two useful training manuals for technicians.

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Implementation of 0.7 in. Diameter Strands in Prestressed ...

Twenty-six strand samples were tested to evaluate the breaking strength, yield strength, and modulus of elasticity of 0.7 in. diameter strands. Test results indicated that the tested strands meet the requirements of the ASTM A416-07. Also, transfer length measurements were taken at three different locations on two prestressed concrete

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PCI E-Learning

The Precast/Prestressed Concrete Institute (PCI) was established to foster greater understanding and use of precast and prestressed concrete products. PCI is headquartered in Chicago, Illinois, maintains a full staff of technical, marketing and education specialists, and has organization and individual members all over the world.

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PRESTRESSED CONCRETE CONSTRUCTION MANUAL

Jun 14, 2016  PRESTRESSED CONCRETE CONSTRUCTION MANUAL 3rd Edition April, 2017 NEW YORK STATE DEPARTMENT OF TRANSPORTATION OFFICE OF STRUCTURES About the Cover: Roslyn Viaduct over Hempstead Harbor

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An Introduction to Precast Prestressed Concrete Insulated ...

May 03, 2019  One or both wythes are usually prestressed to reduce cracking and improve performance (Figure 4). Figure 3: Placing concrete for the exterior Wythe. Figure 4: Installing strand. The panels are trucked to the job site and erected with a crane (Figure 5 A B). Figure 5a: Panels being shipped on 45-degree racks.

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Prestressed Concrete Structure Tutorial

Prestressed Concrete Structure Tutorial PS2 - Three Span Spread PS Box Beam Example ... Add a concrete material for the reinforcement material and prestress strand using the same techniques. The ... Select the Type of Void as Rectangular and click on the copy from Library button. Select BII-48 (AASHTO-PCI BII-48) and click Ok. The beam ...

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PRESTRESS LOSSES AND THE ESTIMATION OF PRESTRESSED ...

Prestressed concrete, an ideal combination of concrete and high strength steel, has emerged as an efficient material for modern construction. The construction of prestressed concrete bridges as a standard practice in the United States dates back to 1949 when the Philadelphia Walnut Ave Bridge was constructed. The technical and economical benefits

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Prestress Superstructure Tutorial

PS14 - Prestressed Concrete I Beam Last Modified: 3/13/2018 1 PS14 - Prestressed Concrete I Beam Example This example details the data input of a prestressed concrete I beam bridge and performing an analysis. This example is a bridge from the Mississippi DOT inventory which includes two units of SR 429, a three-span (138 ft each)

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TECHNICAL DETAILS AND SAMPLE CALCULATIONS

Precast/Prestressed Piling: Design Criteria and Input q Prestressing Strand: Type = 270 ksi, Lolax Size = 1/2" (std.) Qty. = 4 Area = 0.153 square inches per strand Pull = 75% (initial) Concrete: wc = 145 pcf (concrete weight) f'c = 6000 psi (28‐day Concrete Compressive Strength)

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ACI-ASCE Joint Committee 423 – Prestressed Concrete

Update on Status of Recommendations for Concrete Prestressed with Unbonded Tendons (ACI 423.3R-05) Chairman Russel informed the committee of the recent approval and publication of the document. Members should have received a complementary copy from ACI.

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Article 5.5.4.3 Page 1 of 1 11/2019

Prestressed Concrete Bridge Girders. The girder should be checked when the girder is lifted from the forms assuming a hanging girder, vertical cables, and no wind. This condition is shown in Example calculation 6.1.1 in the PCI Manual. The location of the pick points used in the analysis shall be shown on the plans. Revisions:

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PGSuper: Stability - wsdot.wa.gov

"Handling and Shipping of Long Span Bridge Beams", George Laszlo, P.E. and Richard R. Imper, P.E., PCI Journal, November-December 1987 Edition; In-depth examples are given in: "New Deep WSDOT Standard Sections Extend Spans of Prestressed Concrete Girders", Stephen J. Seguirant, P.E., PCI Journal, July-August 1998 Edition

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PC Strand - Sumiden Wire

UNCOATED PC STRAND. Since 1979, Sumiden Wire has manufactured seven-wire prestressed concrete steel strand (PC strand) in the United States. We are able to offer a wide range of sizes and grades as specified in ASTM A416. With manufacturing in California, Tennessee and Texas, we are able to reliably supply your PC strand needs nationwide.

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SECTION 03365 POST TENSIONED CONCRETE PART 1 GENERAL

Reinforced Concrete. 3. PCI "Losses" PCI Committee on Prestress Losses, "Recommendations for Estimating Prestress Losses", Prestressed Concrete Institute, Volume 20, No.4, July/August 1975, pp. 43-75. 4. All applicable codes, specifications, and standards referenced in Sections 03200 and 03300.

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